CA2220371A1 - Apparatus and method for generating ultimate surfaces on ophthalmic lenses - Google Patents
Apparatus and method for generating ultimate surfaces on ophthalmic lensesInfo
- Publication number
- CA2220371A1 CA2220371A1 CA 2220371 CA2220371A CA2220371A1 CA 2220371 A1 CA2220371 A1 CA 2220371A1 CA 2220371 CA2220371 CA 2220371 CA 2220371 A CA2220371 A CA 2220371A CA 2220371 A1 CA2220371 A1 CA 2220371A1
- Authority
- CA
- Canada
- Prior art keywords
- movable support
- lens
- affixed
- actuator
- rotary table
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The apparatus comprises a base having orthogonal horizontal longitudinal axis, horizontal transversal axis and vertical axis, and a tool spindle having a motor and a lens surfacing tool mounted on a rotatable arbour of the motor. The apparatus also comprises a lens holder having a chuck for retaining an ophthalmic lens with a perimeter thereof defining a plane being substantially perpendicular to the longitudinal axis. A first linear slide is affixed to the base and has a first movable support and a first actuator for moving the first movable support along the longitudinal axis.
A second linear slide is also affixed to the base and has a second movable support supporting the lens holder and a second actuator for moving the second movable support and the lens holder along the transversal axis. A
rotary table is affixed to the first movable support and supports the tool spindle. The rotary table has a third actuator for rotating the rotary table about the vertical axis. A computer is provided for simultaneously controlling displacements of the first, second and third actuators, whereby the first, second and third actuators are operable in a compound mode for enhancing the precision of the movements of the lens surfacing tool in a direction normal to the ophthalmic lens.
A second linear slide is also affixed to the base and has a second movable support supporting the lens holder and a second actuator for moving the second movable support and the lens holder along the transversal axis. A
rotary table is affixed to the first movable support and supports the tool spindle. The rotary table has a third actuator for rotating the rotary table about the vertical axis. A computer is provided for simultaneously controlling displacements of the first, second and third actuators, whereby the first, second and third actuators are operable in a compound mode for enhancing the precision of the movements of the lens surfacing tool in a direction normal to the ophthalmic lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2220371 CA2220371C (en) | 1997-07-09 | 1997-11-06 | Apparatus and method for generating ultimate surfaces on ophthalmic lenses |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2210127 | 1997-07-09 | ||
CA2,210,127 | 1997-07-09 | ||
CA 2220371 CA2220371C (en) | 1997-07-09 | 1997-11-06 | Apparatus and method for generating ultimate surfaces on ophthalmic lenses |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2220371A1 true CA2220371A1 (en) | 1999-01-09 |
CA2220371C CA2220371C (en) | 2001-02-20 |
Family
ID=25679478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2220371 Expired - Fee Related CA2220371C (en) | 1997-07-09 | 1997-11-06 | Apparatus and method for generating ultimate surfaces on ophthalmic lenses |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2220371C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102729117A (en) * | 2012-06-19 | 2012-10-17 | 南京中科天文仪器有限公司 | Numerical control aspherical lens polisher |
CN103419099A (en) * | 2013-08-09 | 2013-12-04 | 昆山允可精密工业技术有限公司 | Five-shaft cutter grinding machine |
CN113829177A (en) * | 2021-10-29 | 2021-12-24 | 广东金鼎光学技术股份有限公司 | Automatic fog device of throwing of glass lens |
CN114932486A (en) * | 2022-06-07 | 2022-08-23 | 西安卡特能源科技有限公司 | Oilstone valve grinding machine, control method and application |
-
1997
- 1997-11-06 CA CA 2220371 patent/CA2220371C/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102729117A (en) * | 2012-06-19 | 2012-10-17 | 南京中科天文仪器有限公司 | Numerical control aspherical lens polisher |
CN102729117B (en) * | 2012-06-19 | 2015-03-25 | 南京中科天文仪器有限公司 | Numerical control aspherical lens polisher |
CN103419099A (en) * | 2013-08-09 | 2013-12-04 | 昆山允可精密工业技术有限公司 | Five-shaft cutter grinding machine |
CN113829177A (en) * | 2021-10-29 | 2021-12-24 | 广东金鼎光学技术股份有限公司 | Automatic fog device of throwing of glass lens |
CN114932486A (en) * | 2022-06-07 | 2022-08-23 | 西安卡特能源科技有限公司 | Oilstone valve grinding machine, control method and application |
Also Published As
Publication number | Publication date |
---|---|
CA2220371C (en) | 2001-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |